Incorporated comments P/O: WTI-1956- Renamed foreshore category for the structures input property to keep the desired order of category names in the property panel.
Introduced change handler to clear illustration point result of a single grass cover erosion inwards calculation: WTI-1798- Introduced base class for the individual handlers as there is shared logic between grass and structures calculations- Cleaned up variable names
Incorporated functionality to clear Illustration Points for Grass Cover Erosion Inwards: WTI-1798- Added functions to clear the illustration points from the relevant output objects- Extended test object
